what is this error

[sajley]

thankyou.


this code from qtui.py (qt desingner code)

from PySide import QtCore, QtGui

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(455, 308)
        self.savebtn = QtGui.QPushButton(Dialog)
        self.savebtn.setGeometry(QtCore.QRect(70, 240, 75, 23))
        self.savebtn.setObjectName("savebtn")
        self.closebtn = QtGui.QPushButton(Dialog)
        self.closebtn.setGeometry(QtCore.QRect(190, 240, 75, 23))
        self.closebtn.setObjectName("closebtn")

        self.retranslateUi(Dialog)
        QtCore.QObject.connect(self.closebtn, QtCore.SIGNAL("clicked()"), Dialog.close)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(QtGui.QApplication.translate("Dialog", "Dialog", None, QtGui.QApplication.UnicodeUTF8))
        self.savebtn.setText(QtGui.QApplication.translate("Dialog", "Save", None, QtGui.QApplication.UnicodeUTF8))
        self.closebtn.setText(QtGui.QApplication.translate("Dialog", "Close", None, QtGui.QApplication.UnicodeUTF8))

new modules for use ui

from PySide.QtGui import *
from PySide.QtCore import *
from qtui import Ui_Dialog

class newpanel (QWidget,Ui_Dialog):
    def __init__(self):
        super(newpanel, self).__init__()
        self.setupUi(self)
app = QCoreApplication([])
form = newpanel()
form.show()
app.exec_()

Error:
QWidget: Cannot create a QWidget when no GUI is being used